Concentrations of vitamin C in milk of sows and in plasma of piglets

1995 ◽  
Vol 75 (2) ◽  
pp. 275-277 ◽  
Author(s):  
M. Hidiroglou ◽  
T. R. Batra
Keyword(s):  
Ascorbic Acid ◽  
Blood Plasma ◽  
Acid Concentration ◽  
Acid Content ◽  
High Performance ◽  
Dehydroascorbic Acid ◽  
Ascorbic Acid Content ◽  
Plasma Ascorbic Acid ◽  
Maternal Milk ◽  
Key Words Ascorbic Acid

Colostrum or milk samples from 10 sows and blood plasma samples from 68 piglets were taken between 0 and 28 d after farrowing and analyzed for ascorbic acid and dehydroascorbic acid by high-performance liquid chromatography with electro-chemical detector. Ascorbic acid content of colostrum (265.0 μm mL−1) was more than twice that of subsequently produced milk (100.0 μg mL−1) at 7 d of age. Ascorbic acid content of blood plasma of piglets at birth after uptake of colostrum was 13.1 μg mL−1, which slowly declined during the first 28 d of age to 3.2 μg mL−1. The dehydroascorbic acid concentration in the plasma of piglets ranged from 3.0 μg mL−1 to 3.9 μg mL−1from 7 d to 28 d of age. There was a significant positive correlation between piglet plasma ascorbic acid and maternal milk ascorbic acid concentration. Key words: Ascorbic acid, dehydroascorbic acid, colostrum

Reduced Ascorbic Acid Content of Blood Plasma in Rheumatoid Arthritis.

1936 ◽  
Vol 35 (2) ◽  
pp. 347-350 ◽  
Author(s):  
J. F. Rinehart ◽  
L. D. Greenberg ◽  
F. Baker
Keyword(s):  
Rheumatoid Arthritis ◽  
Ascorbic Acid ◽  
Blood Plasma ◽  
Acid Content ◽  
Ascorbic Acid Content

Intracellular ascorbic acid enhances the DNA single-strand breakage and toxicity induced by peroxynitrite in U937 cells

2001 ◽  
Vol 356 (2) ◽  
pp. 509-513 ◽  
Author(s):  
Andrea GUIDARELLI ◽  
Roberta de SANCTIS ◽  
Barbara CELLINI ◽  
Mara FIORANI ◽  
Marina DACHÀ ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Acid Content ◽  
Dehydroascorbic Acid ◽  
Ascorbic Acid Content ◽  
Single Strand ◽  
Reduced Form ◽  
U937 Cells ◽  
Intracellular Content ◽  
Independent Mechanism ◽  
Strand Breakage

A well-established protocol to increase the intracellular content of ascorbic acid was used to investigate the effects of the vitamin on DNA single-strand breakage and toxicity mediated by authentic peroxynitrite (ONOO−) in U937 cells. This protocol involved exposure for 60min to 100μM dehydroascorbic acid, which was taken up by the cells and converted into ascorbic acid via a GSH-independent mechanism. At the time of exposure to ONOO−, which was performed in fresh saline immediately after loading with dehydroascorbic acid, the vitamin present in the cells was all in its reduced form. It was found that, in cells that are otherwise ascorbate-deficient, an increase in their ascorbic acid content does not prevent, but rather enhances, the DNA-damaging and lethal responses mediated by exogenous ONOO−. These results therefore suggest that acute supplementation of ascorbic acid can be detrimental for individuals with pathologies associated with a decrease in ascorbic acid and in which ONOO− is known to promote deleterious effects.

Ascorbic Acid Content of Blood Plasma, Erythrocytes, Leukocytes and Liver in Camels (Camelus dromedarius) without or with Parasite Infections

2002 ◽  
Vol 72 (6) ◽  
pp. 369-371 ◽  
Author(s):  
Mohamed ◽  
Beynen
Keyword(s):  
Ascorbic Acid ◽  
Vitamin C ◽  
Blood Plasma ◽  
Red Blood Cells ◽  
Whole Blood ◽  
Acid Content ◽  
Blood Cells ◽  
White Blood Cells ◽  
Ascorbic Acid Content ◽  
Parasite Infections

Healthy camels (Camelus dromedaris) and those naturally infected with trypanosomiasis, sarcoptic mange, and helminthiasis were compared as to ascorbic acid (vitamin C) contents of red blood cells, white blood cells, whole blood, plasma, and liver. The camels were kept under natural grazing conditions in Sudan. Reduced levels of vitamin C were found in camels with parasite infections, especially in animals with trypanosomiasis. It is suggested that the low vitamin C status in infected camels is caused by increased utilization and/or decreased synthesis of vitamin C.

Reduced Ascorbic Acid Content of Blood Plasma in Rheumatic Fever.

1936 ◽  
Vol 35 (2) ◽  
pp. 350-353
Author(s):  
J. F. Rinehart ◽  
L. D. Greenberg ◽  
A. U. Christie
Keyword(s):  
Ascorbic Acid ◽  
Rheumatic Fever ◽  
Blood Plasma ◽  
Acid Content ◽  
Ascorbic Acid Content

THE SEASONAL VARIATION IN THE ASCORBIC ACID CONTENT OF EDIBLE WILD PLANTS COMMONLY FOUND IN NEW BRUNSWICK

1947 ◽  
Vol 25c (3) ◽  
pp. 95-101 ◽  
Author(s):  
Elizabeth A. Baird ◽  
Muriel G. Lane
Keyword(s):  
Ascorbic Acid ◽  
Seasonal Variation ◽  
New Brunswick ◽  
Acid Content ◽  
Dehydroascorbic Acid ◽  
Ascorbic Acid Content ◽  
Wild Plants ◽  
Edible Wild Plants ◽  
Green Leaves

The ascorbic acid content in the leaves of 10 wild plants that grow in New Brunswick was determined at approximately two-week intervals from June to September. 'Free' and 'total' dehydroascorbic acid were measured, using the method of Roe. The total ascorbic acid is highest in young green leaves. After the plants have flowered the ascorbic acid decreases. It becomes almost negligible when the leaves have wilted and turned brown. 'Free' dehydroascorbic acid was present in all 10 plants in small quantity. It fluctuated from time to time but remained fairly constant for all the plants during the period of investigation, and was independent of the 'total' value for that plant. The values for ascorbic acid have been measured for ripe strawberries, for fiddleheads, and for several common vegetables over the same summer months. They have been tabulated for comparison with the values of ascorbic acid of the 10 wild plants.

scholarly journals The Ascorbic Acid Content of Blood Plasma of Laying Hens

1939 ◽  
Vol 18 (3) ◽  
pp. 192-200 ◽  
Author(s):  
Arthur D. Holmes ◽  
Francis Tripp ◽  
G. Howard Satterfield
Keyword(s):  
Ascorbic Acid ◽  
Blood Plasma ◽  
Acid Content ◽  
Laying Hens ◽  
Ascorbic Acid Content

ASCORBIC ACID IN RED RASPBERRY FRUIT AND LEAVES

1970 ◽  
Vol 50 (4) ◽  
pp. 457-461 ◽  
Author(s):  
S. O. FEJER ◽  
F. B. JOHNSTON ◽  
MADELEINE M. HAMMILL ◽  
L. P. S. SPANGELO
Keyword(s):  
Ascorbic Acid ◽  
Acid Content ◽  
Dehydroascorbic Acid ◽  
Ascorbic Acid Content ◽  
Leaf Fall ◽  
Red Raspberry ◽  
Present Stage ◽  
Present Material ◽  
Positive Correlations ◽  
Selection Of

Ascorbic acid content of leaves of 30 red raspberry clones was much higher than that of the fruits. In spite of seasonal variation both in leaf and fruit, ascorbic acid content of any clone was relatively similar in the same seasons of two consecutive years. However, the relation of leaf to fruit ascorbic acid was very variable between harvests, ranging from significantly negative to positive correlations. Thus, a selection of high ascorbic acid in the leaf to increase this compound in the fruit is not possible at the present stage, although there were indications that the content of the leaf is inherited by the seedlings. Dehydroascorbic acid was very low in the fall-fruiting Comet raspberry. High ascorbic acid content was related to early leaf fall in the present material.

Studies on Reduced Ascorbic Acid Content of the Blood Plasma.

1936 ◽  
Vol 35 (1) ◽  
pp. 135-139 ◽  
Author(s):  
L. D. Greenberg ◽  
J. F. Rinehart ◽  
N. M. Phatak
Keyword(s):  
Ascorbic Acid ◽  
Blood Plasma ◽  
Acid Content ◽  
Ascorbic Acid Content
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